Coordinated Universal Time UTC and its local realization UTC(TP). Computed values of [UTC−UTC(TP)] and uncertainties valid for the period of a Circular.
From 2009 January 1, 0h UTC, TAI−UTC = 34 s. From 2012 July 1, 0h UTC, TAI−UTC = 35 s.
UTC−UTC(TP), ns
|
Date 0h UTC MJD
|
Dec 29 55924 −20.2 |
Jan 3 55929 −19.9 |
Jan 8 55934 −16.3 |
Jan 13 55939 −19.4 |
Jan 18 55944 −22.3 |
Jan 23 55949 −29.5 |
Jan 28 55954 −23.4 |
Uncertainty/ns uA uB u 0.3 5.1 5.1 |
|
Date 0h UTC MJD
|
Jan 28 55954 −23.4 |
Feb 2 55959 −29.3 |
Feb 7 55964 −29.0 |
Feb 12 55969 −25.8 |
Feb 17 55974 −24.7 |
Feb 22 55979 −21.5 |
Feb 27 55984 −15.6 |
Uncertainty/ns uA uB u 0.3 5.1 5.1 |
|
Date 0h UTC MJD
|
Feb 27 55984 −15.6 |
Mar 3 55989 −12.1 |
Mar 8 55994 −7.2 |
Mar 13 55999 −4.4 |
Mar 18 56004 −1.7 |
Mar 23 56009 −3.1 |
Mar 28 56014 1.5 |
Uncertainty/ns uA uB u 0.3 5.3 5.1 |
|
Date 0h UTC MJD
|
Mar 28 56014 1.5 |
Apr 2 56019 8.3 |
Apr 7 56024 12.9 |
Apr 12 56029 8.7 |
Apr 17 56034 10.2 |
Apr 22 56039 9.9 |
Apr 27 56044 9.6 |
Uncertainty/ns uA uB u 0.3 5.2 5.2 |
|
Date 0h UTC MJD
|
Apr 27 56044 9.6 |
May 2 56049 17.7 |
May 7 56054 21.6 |
May 12 56059 25.4 |
May 17 56064 29.2 |
May 22 56069 30.9 |
May 27 56074 34.7 |
Uncertainty/ns uA uB u 0.3 5.2 5.2 |
|
Date 0h UTC MJD
|
May 27 56074 34.7 |
Jun 1 56079 34.5 |
Jun 6 56084 45.2 |
Jun 11 56089 39.0 |
Jun 16 56094 42.0 |
Jun 21 56099 42.5 |
Jun 26 56104 41.6 |
Uncertainty/ns uA uB u 0.3 5.2 5.2 |
|
Date 0h UTC MJD
|
Jul 1 56109 30.3 |
Jul 6 56114 32.3 |
Jul 11 56119 33.9 |
Jul 16 56124 35.7 |
Jul 21 56129 34.5 |
Jul 26 56134 29.9 |
Jul 31 56139 27.3 |
Uncertainty/ns uA uB u 0.3 5.2 5.2 |
|
Date 0h UTC MJD
|
Jul 31 56139 27.3 |
Aug 5 56144 21.0 |
Aug 10 56149 17.1 |
Aug 15 56154 11.1 |
Aug 20 56159 −2.2 |
Aug 25 56164 −0.7 |
Aug 30 56169 −2.0 |
Uncertainty/ns uA uB u 0.3 5.2 5.2 |
|
Date 0h UTC MJD
|
Aug 30 56169 −2.0 |
Sep 4 56174 −4.5 |
Sep 9 56179 −4.8 |
Sep 14 56184 −8.2 |
Sep 19 56189 −15.9 |
Sep 24 56194 −19.8 |
Sep 29 56199 −22.7 |
Uncertainty/ns uA uB u 0.3 5.1 5.1 |
|
Date 0h UTC MJD
|
Sep 29 56199 −22.7 |
Oct 4 56204 −22.7 |
Oct 9 56209 −23.7 |
Oct 14 56214 −20.5 |
Oct 19 56219 −19.7 |
Oct 24 56224 −22.4 |
Oct 29 56229 −26.8 |
Uncertainty/ns uA uB u 0.3 5.2 5.2 |
|
Date 0h UTC MJD
|
Oct 29 56229 −26.8 |
Nov 3 56234 −27.3 |
Nov 8 56239 −21.5 |
Nov 13 56244 −20.7 |
Nov 18 56249 −17.2 |
Nov 23 56254 −13.8 |
Nov 28 56259 −13.4 |
Uncertainty/ns uA uB u 0.3 5.2 5.2 |
|
Date 0h UTC MJD
|
Nov 28 56259 −13.4 |
Dec 3 56264 −14.9 |
Dec 8 56269 −19.8 |
Dec 13 56274 −21.9 |
Dec 18 56279 −25.9 |
Dec 23 56284 −26.6 |
Dec 28 56289 −28.8 |
Uncertainty/ns uA uB u 0.3 5.1 5.1 |
Monthly rates of TAI−clock for intervals of one month ending at the given dates (unit is ns/day, "-" denotes that the clock was not used).
| Date | MJD | Clocks | |||
| S/N 154 | S/N 163 | S/N 1227 | S/N 2476 | ||
|
28 Jan 2012 |
55954 | 8.91 | - |
14.05 | 6.64 |
| 27 Feb 2012 | 55984 | 10.29 | - |
13.94 | 6.50 |
| 28 Mar 2012 | 56014 | 10.58 | - |
14.25 | 6.57 |
| 27 Apr 2012 | 56044 | 9.80 | 2.62 | 13.95 | 6.73 |
| 27 May 2012 | 56074 | 10.43 | 2.87 | 14.73 | 6.73 |
| 26 Jun 2012 | 56104 | 8.86 | 3.01 | 14.83 | 6.66 |
| 31 Jul 2012 | 56139 | 9.45 | 3.30 | 14.90 | 7.00 |
| 30 Aug 2012 | 56169 | 9.96 | 2.64 | 14.17 | 6.38 |
| 29 Sep 2012 | 56199 | 10.07 | 4.21 | 14.08 | 6.66 |
| 29 Oct 2012 | 56229 | 9.59 | 3.51 | 14.16 | 6.74 |
| 28 Nov 2012 | 56259 | 8.86 | 3.28 | 14.67 | 6.86 |
| 28 Dec 2012 | 56289 | 10.81 | 2.21 | 13.72 | 6.07 |
Relative weights (in percent) of the clocks for intervals of one month ending at the given dates.
| Date | MJD | Clocks | |||
| S/N 154 | S/N 163 | S/N 1227 | S/N 2476 | ||
|
28 Jan 2012 |
55954 | 0.117 |
- |
0.706 | 0.683 |
| 27 Feb 2012 | 55984 | 0.122 | - | 0.704 | 0.704 |
| 28 Mar 2012 | 56014 | 0.138 | - | 0.687 | 0.687 |
| 27 Apr 2012 | 56044 | 0.147 | - | 0.685 | 0.685 |
| 27 May 2012 | 56074 | 0.247 | - | 0.670 | 0.670 |
| 26 Jun 2012 | 56104 | 0.186 | - | 0.670 | 0.670 |
| 31 Jul 2012 | 56139 | 0.178 | - | 0.694 | 0.694 |
| 30 Aug 2012 | 56169 | 0.187 | 0.696 | 0.696 | 0.696 |
| 29 Sep 2012 | 56199 | 0.200 | 0.210 | 0.687 | 0.687 |
| 29 Oct 2012 | 56229 | 0.297 | 0.293 | 0.687 | 0.687 |
| 28 Nov 2012 | 56259 | 0.264 | 0.397 | 0.685 | 0.685 |
| 28 Dec 2012 | 56289 | 0.281 | 0.318 | 0.696 | 0.696 |
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